This flute when played by an elven mage or other wizards of good magic can use it’s melody for many uses.
The song of fire can summon heat
the song of water can flood even the smallest of creeks
the song of wind can create hurricane type winds.
The power of each summon is based on it’s users willpower. You think the power of your summon Ex: play the song of fire but want a small spark then think a small spark. Not for novince wizards, weak minded or dirty minded folk
Somehow, someway, a band of gnomes learns how to be ninjas. In fine gnomish style, they open an academy to teach this art to other gnomes. Wacky Hijinks ensue. Or the gnomes become some of the finest assassins in the land. Or both.